白大角羊 (Ovis dalli) 又称为“戴尔羊”、“薄角羊”，是一种生长在美国阿拉斯加、加拿大育空和卑诗省高山草原的野生绵羊。它们的体色为白色和淡棕色，长有黄棕色的角，两性有明显差异：雄性的体型比雌性大许多，角也更粗、更弯。雄性身长介于 1.3 至 1.8 米，体重 73 至 113 公斤；雌性为 1.3 至 1.6 米长、46 至 50 公斤重。
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Ovis dalli
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dall-sheep
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Animal Facts
When male Dall sheep clash horns, the sound can be heard 1km away.
Dall Sheep are known to travel 10 miles out of their way to visit mineral-rich areas where they lick the soil to acquire nutrients they don't get from their grazing diet.
Male Dall sheep can be aggressive when competing for females and have been known to ram each other off cliffs.
The age of a Dall sheep can be estimated based on the growth rings on their horns.
During the winter months, Dall sheep feed on frozen sedges in the snow and lichen from rocks.
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